Filter



FIG. 1 is a top isometric view showing the front and top of a filter;

FIG. 2 is a bottom isometric view showing the front and bottom of the filter;

FIG. 3 is a front elevation view, with all sides having a mirror image, of the filter;

FIG. 4 is a top plan view of the filter;

FIG. 5 is a bottom plan view the filter;

FIG. 6 is an enlarged detailed view of the portion of the filter encircled as 12 in FIG. 2;

FIG. 7 is a bottom isometric view showing the front and bottom of an alternative embodiment of the filter;

FIG. 8 is a top isometric view showing the front and top of the alternative embodiment of the filter;

FIG. 9 is a front elevation view, with all sides having a mirror image, of the alternative embodiment of the filter;

FIG. 10 is a bottom plan view of the alternative embodiment of the filter; and,

FIG. 11 is a top plan view of the alternative embodiment of the filter.

The broken lines in the drawings represent portions of the filter that form no part of the claimed design. 

CLAIM The ornamental design of the filter, as shown and described. 